William Olcott may refer to:
*
William J. Olcott (1862–1935), American football player and mining and railroad executive
*
William Tyler Olcott
William Tyler Olcott (January 11, 1873–July 6, 1936) was an American lawyer and amateur astronomer.
He was born in Norwich, Connecticut, to William Marvin Olcott and E. Octavia Tyler, and was educated at Trinity College at Hartford, then ...
(1873–1936), American lawyer and amateur astronomer
*
William M. K. Olcott (1862–1933), American lawyer and politician from New York City
{{hndis, Olcott, William